I'm sorry to say you clearly haven't understood much of what 'The Great Gatsby' is trying to put across. One of the most promininent features of the book is Fitzgerald's irony and pessimism. Fitzgerald was grossly discontented with what America had evolved into from when the first pilgrims arrived on the virgin shores, so filled with hope. He continually criticizes the society he lived in, and paradoxically partook of with such alacrity. Next time you attack a novel, be sure to actually understand what it's about.